Intangible Assets Gross Carrying Amount and Accumulated Amortization (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 804,281	$ 783,140
Accumulated Amortization	(608,441)	(563,769)
Intangible assets, net	195,840	238,771
Net	195,840	219,371
Intangible Assets, Gross (Excluding Goodwill)	804,281	802,540	749,194
In-process research and development [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	0	19,400
Core-developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	428,890	407,024
Accumulated Amortization	(356,017)	(332,763)
Net	72,873	74,261
Customer contracts and relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	291,185	292,252
Accumulated Amortization	(173,952)	(154,890)
Net	117,233	137,362
Trademarks and trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	73,117	72,770
Accumulated Amortization	(67,449)	(65,090)
Net	5,668	7,680
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	11,089	11,094
Accumulated Amortization	(11,023)	(11,026)
Net	$ 66	$ 68